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21篇 您的检索式:作者名="Meiling Han"
    题名 作者 年代 出处 被引量
1Generation of human haploid embryonic stem cells from parthenogenetic embryos obtained by microsurgical removal of male pronucleus显示文摘Cuiqing Zhong Meiling Zhang Qi Yin Han Zhao Yang Wang Sexin Huang Wenrong Tao Keliang Wu Zi-Jiang Chen Jinsong Li 2016Cell Research2016,26,6:16
2In vitro Anthocyanin Induction and Metabolite Analysis in Malus spectabilis Leaves Under Low Nitrogen Conditions显示文摘Anthocyanins are the most widely produced secondary metabolites in plants,and they play an important role in plant growth and reproduction.The nitrogen source is an important factor affecting anthocyanin production,but the nitrogen concentrations on metabolism and the underlying genetic basis remain unclear.In this study,in vitro anthocyanin induction was conducted on Malus spectabilis.The leaf explants were cultivated in media containing different nitrogen concentrations.The results suggested that when the nitrogen contents decreased in limit,the color of leaf explants turned from green to red,and increased anthocyanin accumulation led to a change in phenotype.Furthermore,the content of other flavonoids,such as dihydroquercetin,epicatechin,and catechin,increased under low nitrogen conditions.The transcription levels of the general flavonoid pathway genes,from phenylalanine ammonia lyase(PAL)to anthocyanidin synthase(ANS),were associated with the concentration of corresponding flavonoid compounds and phenotype changes.In particular,the expression level of ANS increased substantially under a low nitrogen treatment,which was significantly and positively correlated with the anthocyanin levels(R2=0.72,P<0.05).The increased expression patterns of anthocyanin pathway genes were similar to that of the transcription factor MYB10.We further verified MYB10 played an important role in the anthocyanin pathway in leaves of Malus spectabilis.These results suggested that we can improve the desirable ornamental plant phenotypes by controlling nitrogen content.This process may offer clues to further development of new agricultural practices.Jiaxin Meng Yan Gao Meiling Han Pengyuan Liu Chen Yang Ting Shen Houhua Li 2020Horticultural Plant Journal2020,6,5:13
3Endogenous level of TIGAR in brain is associated with vulnerability of neurons to ischemic injury显示文摘In previous studies,we showed that TP53-induced glycolysis and apoptosis regulator(TIGAR) protects neurons against ischemic brain injury.In the present study,we investigated the developmental changes of TIGAR level in mouse brain and the correlation of TIGAR expression with the vulnerability of neurons to ischemic injury.We found that the TIGAR level was high in the embryonic stage,dropped at birth,partially recovered in the early postnatal period,and then continued to decline to a lower level in early adult and aged mice.The TIGAR expression was higher after ischemia/reperfusion in mouse brain 8and 12 weeks after birth.Four-week-old mice had smaller infarct volumes,lower neurological scores,and lower mortality rates after ischemia than 8- and12-week-old mice.TIGAR expression also increased in response to oxygen glucose deprivation(OGD)/reoxygenation insult or H_2O_2 treatment in cultured primary neurons from different embryonic stages(E16 and E20).The neurons cultured from the early embryonic period had a greater resistance to OGD and oxidative insult.Higher TIGAR levels correlated with higher pentose phosphate pathway activity and less oxidative stress.Older mice and more mature neurons had more severe DNA and mitochondrial damage than younger mice and less mature neurons in response to ischemia/reperfusion or OGD/reoxygenation insult.Supplementation of cultured neurons with nicotinamide adenine dinuclectide phosphate(NADPH) significantly reduced ischemic injury.These results suggest that TIGAR expression changes during development and its expression level may be correlated with the vulnerability of neurons to ischemic injury.Lijuan Cao Jieyu Chen Mei Li Yuan-Yuan Qin Meiling Sun Rui Sheng Feng Han Guanghui Wang Zheng-Hong Qin 2015Neuroscience Bulletin2015,31,5:6
4Sensitive electrochemical DNA sensor for the detection of HIV based on a polyaniline/graphene nanocomposite显示文摘A nanocomposite of polyaniline/graphene(PAN/GN)was prepared using reverse-phase polymerization.The nanocomposite material was dropcast onto a glassy carbon electrode(GCE).Then,a single-stranded DNA(ssDNA)probe for HIV-1 gene detection was immobilized on the modified electrode,and the negative charged phosphate backbone of the HIV-1 was bound to the modified electrode surface via p-p*stacking interactions.The hybridization between the ssDNA probe and the target HIV-1 formed doublestranded DNA(dsDNA),and the electron transfer resistance of the electrode was measured using impedimetric studies with a[Fe(CN)6]^(3-/4-)redox couple.Under the optimized experimental conditions,the change of the impedance value was linearly related to the logarithm of the concentration of HIV genes in the range from 5.0×10^(-16)M to 1.0×10^(-10)M(R=0.9930),and the HIV sensor exhibited a lower detection limit of 1.0×10^(-16)M(S/N=3).The results show that this biosensor presented wonderful selectivity,sensitivity and specificity for HIV-1 gene detection.Thus,this biosensor provides a new method for the detection of HIV gene fragments.Qiaojuan Gong Haixia Han Haiying Yang Meiling Zhang Xiaoling Sun Yunxia Liang Zhaorong Liu Wenchan Zhang Jinli Qiao 2019Journal of Materiomics2019,5,2:5
5Wheat breeding history reveals synergistic selection of pleiotropic genomic sites for plant architecture and grain yield显示文摘Diversity surveys of crop germplasm are important for gaining insights into the genomic basis for plant architecture and grain yield improvement,which is still poorly understood in wheat.In this study,we exome sequenced 287 wheat accessions that were collected in the past 100 years.Population genetics analysis identified that 6.7%of the wheat genome falls within the selective sweeps between landraces and cultivars,which harbors the genes known for yield improvement.These regions were asymmetrically distributed on the A and B subgenomes with regulatory genes being favorably selected.Genome-wide association study(GWAS)identified genomic loci associated with traits for yield potential,and two underlying genes,TaARF12 encoding an auxin response factor and TaDEP1 encoding the G-proteinγ-subunit,were located and characterized to pleiotropically regulate both plant height and grain weight.Elite single-nucleotide haplotypes with increased allele frequency in cultivars relative to the landraces were identified and found to have accumulated over the course of breeding.Interestingly,we found that TaARF12 and TaDEP1 function in epistasis with the classical plant height Rht-1 locus,leading to propose a“Green Revolution”-based working model for historical wheat breeding.Collectively,our study identifies selection signatures that fine-tune the gibberellin pathway during modern wheat breeding and provides a wealth of genomic diversity resources for the wheat research community.Aili Li Chenyang Hao Zhenyu Wang Shuaifeng Geng Meiling Jia Fang Wang Xiang Han Xingchen Kong Lingjie Yin Shu Tao Zhongyin Deng Ruyi Liao Guoliang Sun Ke Wang Xingguo Ye Chengzhi Jiao Hongfeng Lu Yun Zhou Dengcai Liu Xiangdong Fu Xueyong Zhang Long Mao 2022Molecular Plant2022,15,3:4
6In vitro expansion of human sperm through nuclear transfer显示文摘Dear Editor,Mammalian haploid embryonic stem cells(haESCs)represent an ideal tool for genetic analysis due to the presence of only one set of genetic materials.HaESCs fall into two readily distinguishable groups based on their genome origins:parthenogenetic haESCs(PG-haESCs)that are derived from oocyte-originated parthenogenetic embryos and androgenetic haESCs(AG-haESCs)that are produced through sperm nuclear transfer.Both PG-and AGhaESCs are feasible for delineating genome function at cellular level in vitro.Importantly,AG-haESCs can be used as a sperm replacement and applied to deciphering gene function at organismal level when combined with CRISPR-Cas9 technology.1 However,while PG-haESCs have been generated from both rodent and primates,2-5 AG-haESCs can only be obtained in rodent to date.Xiaoyu Merlin Zhang Keliang Wu Yuxuan Zheng Han Zhao Junpeng Gao Zhenzhen Hou Meiling Zhang Jiaoyang Liao Jingye Zhang Yuan Gao Yuanyuan Li Lin Li Fuchou Tang Zi-Jiang Chen Jinsong Li 2020Cell Research2020,30,4:3
7Characterization and Expression of Ammonium Transporter in Peach (Prunus persica) and Regulation Analysis in Response to External Ammonium Supply显示文摘As the preferred nitrogen(N)source,ammonium(NH_(4)^(+))contributes to plant growth and development and fruit quality.In plants,NH 4+uptake is facilitated by a family of NH_(4)^(+) transporters(AMT).However,the molecular mechanisms and functional characteristics of the AMT genes in peach have not been mentioned yet.In this present study,excess NH_(4)^(+) stress severely hindered shoot growth and root elongation,accompanied with reduced mineral accumulation,decreased leaf chlorophyll concentration,and stunned photosynthetic performance.In addition,we identified 14 putative AMT genes in peach(PpeAMT).Expression analysis showed that PpeAMT genes were differently expressed in peach leaves,stems and roots,and were distinctly regulated by external NH_(4)^(+) supplies.Putative cis-elements involved in abiotic stress adaption,Ca^(2+) response,light and circadian rhythms regulation,and seed development were observed in the promoters of the PpeAMT family genes.Phosphorylation analysis of residues within the C-terminal of PpeAMT proteins revealed many conserved phosphorylation residues in both the AMT1 and AMT2 subfamily members,which could potentially play roles in controlling the NH 4+transport activities.This study provides gene resources to study the biological function of AMT proteins in peach,and reveals molecular basis for NH_(4)^(+) uptake and N nutrition mechanisms of fruit trees.Meiling Tang Yuhe Li Yahui Chen Lei Han Hongxia Zhang Zhizhong Song 2020Phyton-International Journal of Experimental Botany2020,89,4:2
8Copper‑Based Catalysts for Electrochemical Carbon Dioxide Reduction to Multicarbon Products显示文摘Electrochemical conversion of carbon dioxide into fuel and chemicals with added value represents an appealing approach to reduce the greenhouse effect and realize a carbon-neutral cycle,which has great potential in mitigating global warming and effectively storing renewable energy.The electrochemical CO_(2) reduction reaction(CO_(2)RR)usually involves multiproton coupling and multielectron transfer in aqueous electrolytes to form multicarbon products(C_(2+) products),but it competes with the hydrogen evolution reaction(HER),which results in intrinsically sluggish kinetics and a complex reaction mechanism and places higher requirements on the design of catalysts.In this review,the advantages of electrochemical CO_(2) reduction are briefly introduced,and then,different categories of Cu-based catalysts,including monometallic Cu catalysts,bimetallic catalysts,metal-organic frameworks(MOFs)along with MOF-derived catalysts and other catalysts,are summarized in terms of their synthesis method and conversion of CO_(2) to C2+products in aqueous solution.The catalytic mechanisms of these catalysts are subsequently discussed for rational design of more efficient catalysts.In response to the mechanisms,several material strategies to enhance the catalytic behaviors are proposed,including surface facet engineering,interface engineering,utilization of strong metal-support interactions and surface modification.Based on the above strategies,challenges and prospects are proposed for the future development of CO_(2)RR catalysts for industrial applications.Fangfang Chang Meiling Xiao Ruifang Miao Yongpeng Liu Mengyun Ren Zhichao Jia Dandan Han Yang Yuan Zhengyu Bai Lin Yang 2022Electrochemical Energy Reviews2022,5,3:2
9Phenolic Profile, Antioxidant Activity and Anti-proliferative Activity of Crabapple Fruits显示文摘To explore the potential of crabapples as functional food, polyphenols in crabapples and ‘Fuji’ apples were extracted, and the phenolic profile,total polyphenols, antioxidant activity and anti-proliferative activity against several human cancer cells were determined. The results indicated that crabapple extracts have more abundant phenols and higher total polyphenols(from 4.46 to 46.63 mg GAE·g-1 DW) compared to ‘Fuji’ apples.Crabapple extracts possessed higher antioxidant activity than apple by DPPH and ABTS analysis. All fruit extracts exhibited inhibitory effects on proliferation in different cancer cells;however, crabapple extracts performed significantly better, with half inhibitory concentration(IC50)values varied from 48.34 μg·m L-1 to 974.81 μg·m L-1 for colon cancer cells SW480, 64.67–1 466.35 μg·m L-1 for stomach cancer cells BGC-803,78.88–910.64 μg·m L-1 for esophageal cancer cells CaEs-17. Besides, the red crabapples had higher antioxidant activity and anti-proliferative activity than yellow fruits. These results showed that crabapples, especially red crabapples, have great potential as a healthy food, as they are rich in phenolic compounds with high antioxidant and anti-proliferative activities to cancer cells.Meiling Han Guo Li Xiaowei Liu Ai Li Peiqi Mao Pengyuan Liu Houhua Li 2019Horticultural Plant Journal2019,5,4:1
10Facile and green synthesis of well-dispersed Au nanoparticles in PAN nanofibers by tea polyphenols显示文摘Zhu Han Du Mingliang Zou Meiling 2012Journal of Materials Chemistry2012,22,18:1
11High coercivity Nd-Ce-Fe-B nanostructured ribbons prepared from melt spinning technique显示文摘The Ce-substituted(Nd1-xCex)12.2 Fe81.6 B6.2(x=0.0, 0.2, 0.4, 0.6) nanocrystalline ribbons were prepared by annealing amorphous ribbons from melt spinning. It is found that all ribbons are in a multiphase state consisting of a-Fe phase, Nd(Ce)-rich phases and RE2 Fe14 B(RE = Nd, Ce) phases. However, the coercivity of all annealed ribbons can reach a considerably high value without doping any heavy rare earth or other coercivity enhanced elements. A strong intergranular exchange coupling appears in these nanocrystalline ribbons. The Nd12.2 Fe81.6 B6.2 ribbons with multiphase have a coercivity of about 11.3 k Oe, and the coercivity decreases slightly with increasing Ce content. A coercivity of 7.5 kOe can be obtained when60 at% of Nd is replaced by Ce(x = 0.6) due to the grain refinement and the strong intergranular exchange coupling. This provides a practical approach of fabricating high coercivity Ce-substituted Nd-Fe-B materials.Liang Zha Zhou Liu Hao Chen Mingzhu Xue Guanyi Qiao Shilei Ding Xin Wen Meiling Zhang Youfang Lai Wenyun Yang Jingzhi Han Dong Zhou Chenyao Zhu Jinbo Yang 2019Journal of Rare Earths2019,37,10:1
12Role of gap junction intercellular communication in testicular leydigcell apoptosis induced by oxaliplatin via the mitochondrial pathway显示文摘Xuhui Tong Xi Han Binbin Yu Meiling Yu Guojun Jiang Jie Ji Shuying Dong 2015Oncology Reports2015,,1:1
13Self-assembly of various Au nanocrystals on functionalized water-stable PVA/PEI nanofibers: A highly efficient surface-enhanced Raman scattering substrates with high density of “hot” spots显示文摘Han Zhu MingLiang Du Ming Zhang Pan Wang ShiYong Bao Meiling Zou YaQin Fu JuMing Yao 2014Biosensors and Bioelectronics2014,,:1
14A Study on Ginseng Price Fluctuations in China and South Korea显示文摘China and South Korea are the main producers and exporters of ginseng. This paper mainly discusses the characteristics of ginseng price fluctuations in China and South Korea. As people continue to understand the concept of homology of medicine and food,there is still an increasing international demand for ginseng,and the favorable market can be expected.Meiling LIANG Xiangguo LI Lianhua HAN 2017Asian Agricultural Research2017,9,9:0
15Realizing enhanced thermoelectric properties in Cu_(2)S-alloyed Sn Se based composites produced via solution synthesis and sintering显示文摘Sn Se emerges as one of the most promising Te-free thermoelectric materials due to its strong anharmonicity and multiple valence bands structure.Recently,compositing has been proven effective in optimizing thermoelectric performance of various metal chalcogenides.Herein,a series of Sn Se-x Cu_(2)S(x=0,0.5%,1%,3%,5%)materials have been fabricated via solution synthesis,particle blending,and spark plasma sintering in sequence.After incorporating Cu_(2)S,the materials become Sn Se based composites with Cu doping,S substitution and Cu_(2)Sn Se_(3)secondary phase.We elucidate that the power factor of polycrystalline Sn Se can be tuned and enhanced at varied temperature ranges through adjusting the addition amount of Cu_(2)S.Additionally,the composites achieve suppressed lattice thermal conductivity when compared to Sn Se itself,as the introduced point defects and Sn Se/Cu_(2)Sn Se_(3)interfaces intensify phonon scattering.Consequently,Sn Se-0.5%Cu_(2)S and Sn Se-3%Cu_(2)S achieve a peak z T of 0.70 at 830 K(intermediate temperature range)and a highly increased z T of 0.28 at 473 K(low temperature range),respectively,which are~130%and 200%of values reached by Sn Se at the corresponding temperatures.The study demonstrates that our approach,which combines compositing with elemental doping and substitution,is effective in optimizing the thermoelectric performance of Sn Se at varied temperature ranges.Yao Chen Jie Chen Bin Zhang Meiling Yang Xiaofang Liu Hengyang Wang Lei Yang Guoyu Wang Guang Han Xiaoyuan Zhou 2021Journal of Materials Science & Technology2021,,19:0
16Preparation and Superconducting Properties of F-doped SmO_(1-x)F_xFeAs显示文摘Here we report the fabrication and superconductivity of the iron-based arsenic oxide SmO1-xFxFeAs compound.X-ray diffraction(XRD) results prove that the lattice parameters a and c decrease systematically with increasing x in between 00.35 the a and c increase with the decrease of x in the SmO1-xFxFeAs.The critical temperature(Tc) increases with increasing x in between 0.15≤x≤0.3,while x>0.3 the Tc decreases with the increase of x.It is found that at x=0.3 SmO0.7F0.3FeAs has the highest onset resistivity transition temperature of 55.5 K.The critical current density(Jc) value at 10 K for the obtained SmO0.7F0.3FeAs is 1.3×10 5 A/cm2(0T).Meanwhile one can estimates Hc2(0) from the slope of the Hc2(T) curve at T =Tc(HC2 is the upper critical field),and for the 90% normal-state resistivity(ρn) criterion(Tc=55 K),Hc2(0) is determined to be ~253 T.Zhiyong Liu Hongli Suo Lin Ma Min Liu Zhiping Wu Zhichao Guo Luping Han Meiling Zhou 2011Journal of Materials Science & Technology2011,27,3:0
17Sexual competition and kin recognition co-shape the traits of neighboring dioecious Diospyros morrisiana seedlings显示文摘Plants respond differently to the identity of their neighbors,such as their sex and kinship,showing plasticity in their traits.However,how the functional traits of dioecious trees are shaped by the recognition of neighbors with different sex and kinship remains unknown.In this study,we set up an experiment with different kin/nonkin and inter/intrasexual combinations for a dioecious tree species,Diospyros morrisiana.The results showed that plants grew better with nonkin and intrasexual neighbors than with kin and intersexual neighbors.Kin combinations had significantly shorter root length in the resource-overlapping zone than nonkin combinations,suggesting that kin tended to reduce competition by adjusting their root distribution,especially among female siblings.Our study suggested that the seedling growth of D.morrisiana was affected by both the relatedness and sexual identity of neighboring plants.Further analysis by gas chromatography-mass spectrometry showed that the root exudate composition of female seedlings differed from that of male seedlings.Root exudates may play important roles in sex competition in dioecious plants.This study indicates that sex-specific competition and kin recognition interact and co-shape the traits of D.morrisiana seedlings,while intrasexual and nonkin neighbors facilitate the growth of seedlings.Our study implies that kin-and sex-related interactions depend on different mechanisms,kin selection,and niche partitioning,respectively.These results are critical for understanding how species coexist and how traits are shaped in nature.Yulin He Han Xu Hanlun Liu Meiling Luo Chengjin Chu Suqin Fang 2021Horticulture Research2021,8,1:0
18Key role of electron accessibility at the noble metal-free catalytic interface in hydrogen evolution reaction显示文摘The reactant concentration at the catalytic interface holds the key to the activity of electrocatalytic hydrogen evolution reaction(HER),mainly referring to the capacity of adsorbing hydrogen and electron accessibility.With hydrogen adsorption free energy(ΔGH)as a reactivity descriptor,the volcano curve based on Sabatier principle is established to evaluate the hydrogen evolution activity of catalysts.However,the role of electron as reactant received insufficient attention,especially for noble metal-free compound catalysts with poor conductivity,leading to cognitive gap between electronic conductivity and apparent catalytic activity.Herein we successfully construct a series of catalyst models with gradient conductivities by regulating molybdenum disulfide(MoS_(2))electronic bandgap via a simple solvothermal method.We demonstrate that the conductivity of catalysts greatly affects the overall catalytic activity.We further elucidate the key role of intrinsic conductivity of catalyst towards water electrolysis,mainly concentrating on the electron transport from electrode to catalyst,the electron accumulation process at the catalyst layer,and the charge transfer progress from catalyst to reactant.Theoretical and experimental evidence demonstrates that,with the enhancement in electron accessibility at the catalytic interface,the dominant parameter governing overall HER activity gradually converts from electron accessibility to combination of electron accessibility and hydrogen adsorbing energy.Our results provide the insight from various perspective for developing noble metal-free catalysts in electrocatalysis beyond HER.Dongchen Han Nanxing Gao Yuyi Chu Zhaoping Shi Ying Wang Junjie Ge Meiling Xiao Changpeng Liu Wei Xing 2024Nano Research2024,17,4:0
19Effect of temperature and stress on high temperature creep behavior of Ni_(3)Al-based single crystal superalloy显示文摘The creep behavior and dislocations mechanism of the Ni_(3)Al-based single crystal alloy IC6SX with[001]orientation were investigated under the testing conditions of 1100℃/137 MPa,1100℃/120 MPa and 1070℃/137 MPa.It was observed that the temperature and stress had a significant effect on the high temperature creep life of the single crystal alloy.As the temperature was reduced from 1100℃ to 1070℃,the creep life increased from 65.07 h to 313.8 h.As the stress was reduced to 120 MPa,the creep life increased to 243.3 h.Under the high temperature and low stress condition the dislocations entered theγ0 phase by climbing caused by the atomic diffusion,instead of slipping.Cheng Chang Liwu Jiang Meiling Wu Shusuo Li Yafang Han 2022Progress in Natural Science:Materials International2022,32,2:0
20Potassium nutrition of maize:Uptake,transport,utilization,and role in stress tolerance显示文摘Potassium(K) is an essential macronutrient for plant growth and development and influences yield and quality of agricultural crops.Maize(Zea mays) is one of the most widely distributed crops worldwide.In China,although maize consumes a large amount of K fertilizer,the K uptake/utilization efficiency(KUE)of maize cultivars is relatively low.Elucidation of KUE mechanisms and development of maize cultivars with higher KUE are needed.Maize KUE is determined by K+uptake,transport,and remobilization,which depend on a variety of K+channels and transporters.We review basic information about K+channels and transporters in maize,their functions and regulation,and the roles of K+in nitrogen transport,sugar transport,and salt tolerance.We discuss challenges and prospects for maize KUE improvement.Meiling Zhang Yingying Hu Wu Han Jian Chen Jinsheng Lai Yi Wang 2023The Crop Journal2023,11,4:0
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